HNHacker News
TopNewBestAskShowJobs

cc438

178 karma · joined January 28, 2012

submissionscomments
cc438··on The strange expertise of burglars
How many rings would the average person have other than their wedding ring or band? They might have a college ring but isn't worth stealing (initials, graduation year, sometimes a name, all easily identifiable by a pawn shop) unless you can melt it down or have a trusted source that can do that job. We don't have much in the way of jewelry but our parents do and they only have their wedding rings/bands and college rings.

If someone did have other rings, I'd think they'd be visually different, wedding rings typically have one large diamond set with other jewels and a band is dead obvious as it's so plain. A ring with multiple small diamonds or other gemstones (emerald, ruby, etc) would almost always be a safe bet, especially if a ring similar to the traditional wedding ring was available for comparison.

cc438··on California Is Sitting on the Solution to Its Drought Problem
The current salt market is based on a supply of actively produced salt. Only ~7%* of worldwide production is "solar salt", derived from evaporating sea water. The rest is actively mined or extracted by other methods.

Dumping 200 million tons of new "solar salt" on the market would collapse prices and signal the end for the existing player in the salt industry. I don't think this would be an issue in the long term as salt derived from a hypothetical mass-desalinization industry is essentially free. Replacing heavy industry with the byproduct of an essential and beneficial process is the very definition of economic and environmental efficiency.

California gets a secure water supply, consumers and industry get cheaper salt, and the imprint of the salt mining industry is no longer a concern in the environment.

*Source: http://www.saltinstitute.org/salt-101/production-industry/

cc438··on Microscopic footage of a needle moving across the grooves of a record
That's the perfect movie for demonstrating the potential of multi-channel audio. The only problem is that you're also relying on the viewer to have proper speaker placement, sound levels and speaker calibration. Autocalibration (YPAO) is simple and easy but hardly anyone knows to use it when installing their $300 home-theater-in-a-box.
cc438··on Why the Return Trip Feels Shorter Than the Way There
I think there is another effect at play during a return trip, at least for me. I used to regularly tackle a 900 mile (1,800 mile roundtrip) haul between home and college and it felt longer with each trip.

The trip felt longer as my familiarity with the route increased. I reached a point where I knew exactly how far I still had to travel at any point and the close I got to my destination, the more frustrating it became. I'd feel like I was on the home stretch as I knew my surroundings intimately but I'd still have 1-2 hours left to go.

cc438··on FIFA Officials Arrested on Corruption Charges; Face Extradition to U.S
Think of it more like 4 billion "views".

If 1 person watches 6 matches they count as 6 "viewers" for those statistics. It makes sense if you're trying to track retainment for an event that's broken up into several instances.

cc438··on We Can’t Let John Deere Destroy the Idea of Ownership
"All they care about is whether or not it works."

Which is why they care more about this issue than someone without a mega-tractor. These vehicles need to be operational when they're called upon, every minute of downtime costs a substantial amount of money that adds up incredibly fast. Sure, they have service contracts but waiting on a technician and waiting even longer for a replacement part is out of the question. A broken sensor will disable a tractor even if it would run perfectly fine without it. Mega farms care about losing the ability to improvise repairs in the field and/or take the risk of long term damage if its outweighed by the cost of the short term downtime.

I've experienced the results of an ECU that can disable a perfectly functional vehicle. I had a ride day with one of our service technicians in our Class 7 truck. The "Check Engine" light had been coming on intermittently throughout the day but we ignored it as it came on inconsistently and we were already 2 hours behind. On our way back to our branch the light came on again at highway speed and 30 seconds later the engine went into "limp home" mode and then shut itself off. We came to a rest on the side of the highway, tilted slightly into a ditch. After calling the local service manager we were informed that the head gasket had blown and the last technician to drive the truck was supposed to refill the coolant and let us know about the issue. We hiked down the road with the empty coolant bottles the last tech left for us and brought back 20 gallons of water, filling the expansion tank. So we should be good as long as we kept tabs on the water level, right? Nope. The water level sensor was placed in in a position where we couldn't fill the tank high enough for it to read the tank as full due to the angle of the truck in the ditch. It wouldn't start without a "safe" reading from the sensor and we couldn't level the truck out without it's own power. That sensor left us stranded for 3 hours until a repair truck arrived and had us running in less than 10 minutes by jacking up the low side of the truck. Now imagine losing half a day during harvest for the same bullshit reason.

cc438··on Where Was Modern Flight Invented? Connecticut Believes It Holds the Answer
The importance of either flight wasn't that they achieved flight, it was that they achieved sustained, controlled flight. Whitehead flew with full control authority (3 axis') in 1902 and the Wright Brothers in 1903. Devising a system of control over pitch, roll, and yaw was the real breakthrough for a heavier than air vehicle. Balloons have altitude authority but are otherwise at the mercy of the wind. Various gliders couldn't control altitude without external assistance (thermals, launch height) but they could theoretically control all 3 axis', mostly through shifting weight distribution.

Sustained flight required a significant increase in the size and weight of the aircraft (powerplants are heavy and the lift and control surfaces must be increased to compensate) which meant control through shifting weigh distribution was out. Creating an inherently stable aircraft with control authority was a game changer and a significant challenge that both parties deserve recognition for.

cc438··on Where Was Modern Flight Invented? Connecticut Believes It Holds the Answer
The fact that this remained controversial due to a lack of evidence for over a century speaks to how limited the world's communication networks were at the time. It took a century to uncover evidence in the form of first page reports, a form of communication that we'd all believe would spread the message far and wide, yet Whitehead's accomplishments were relegated to obscurity almost as soon as they were reported.

I remember reading about these claims a few years ago and the only evidence at that time was the back page report in a newspaper that most Wright supporters denigrated as a satirical source akin to today's "The Onion". I was ready to hop in the comments section ready to decry the article only to find that the digitization of archives had completely changed the body of evidence supporting Whitehead's claim.

To be fair, the Wright brothers have their place as the first successful aviators as they were able to iterate and expand on their Wright Flyer's design to produce an unbroken lineage of aircraft leading to the modern day. Whitehead's design flew first but it was ultimately a dead end aside from his powerplant. I think there's an equal place in history for creators of the first practical, foundational, or modern design in a given category. Invention doesn't happen in a vacuum and researching the best combination of fundamental concepts and applying them as the Wright brothers did is equally revolutionary in my opinion

cc438··on AMD Exits Dense Microserver Business, Ends SeaMicro Brand
>"They seem to be paralysed from the inside."

I agree with your assessment but I think it's more than a leadership issue, AMD is in a financial hole in a market where billion dollar investments are needed just to maintain your market position. They don't have the capital needed to maintain relevancy in their primary market (x86 chips) and they definitely don't have the capital needed to gain a strong foothold in the rapidly maturing ARM market.

Their window of opportunity has passed as long as Intel maintains the non-transferable nature of their x86 license. Their downfall was their insistence on pushing out Bulldozer despite the fundamental flaws in its concept. They spent ~5 years pursuing that architecture as their main path for R&D, wasting massive amounts of money in the process. If AMD had scrapped Bulldozer when they first knew it would miss their performance target they would have been able to pursue one of the many suggested alternative routes for the future. IMO, the best suggestions would have been ARM or low power APUs when the original Atoms were the only option and terribly slow.

cc438··on How to Hire Sales People
>Isn't this a marker of both gullibility and unscrupulousness?

Companies that take these kinds of reports seriously will usually use a second source to verify the information. My old employer always tried to interview 2 candidates from the same company and region so they can compare the rankings and data presented by the candidates. There was also an informal network of information sharing as everyone had worked for everyone else in the industry at some point and had contacts they could reach out to. Plus, prestigious recognitions, things like Chariman's/President's clubs for top reps, usually get listed in some publicly available form (ours was in our quarterly fluff magazine available on our website).

Now is it ethical? I've noticed that there's a recognized line in sales culture between information concerning a rep's personal performance and proprietary company information. Things like stack rankings (scrubbed of $ figures), activity stats, close ratios, etc are considered kosher by everyone as they don't reveal anything that could realistically damage the company. Things like a rep's list of contacts, anything with revenue figures, etc are frowned upon as they are considered unethical for a variety of reasons. It shows the candidate is willing to damage their employer and knowing that data puts the hiring company in a bad legal position.

Salespeople are judged on their performance and their performance is unique in that it can be quantified in hard numbers. Sales culture has a high level of tolerance for sharing of relevant information as it benefits everyone involved. Candidates get objective proof of their value to a potential employer and employers get objective information, making their hiring decision truly informed instead of a subjective crapshoot like you find in elsewhere.

cc438··on How to Hire Sales People
In my experience, there are 2 groups of sales reps that can be distinguished with this question (assuming an honest answer). There aren't many reps in a middle ground between the two either.

There's the hyper-organized salesperson, their calendar is regimented to the point that every hour is tied to some revenue-generating activity. Their room, like their desk, office, and car (if they're in an outside sales role) will be equally organized. There is variation and I've generalized some common traits, but the organized rep will fit in a role that requires attention to detail, time management, and new business.

The other type of rep is the "wing it", off the cuff rep. They are quick to respond to any request and although they aren't spending every minute selling, they prefer to juggle a number of tasks at once. A messy room can help narrow their personality down. The "in-the-moment" rep is a good fit for an fast paced role that needs the rep to constantly adapt and respond quickly to customer concerns.

Is one question going to tell you all of that? No, but it is a useful tool for building a profile of their personality and selling style but you'll need a lot more than one answer to base it on.

cc438··on How to Hire Sales People
>We also looked for proactive junior staff out of companies like LinkedIn who were ready for the next step, but not afforded the opportunity.

This is the more efficient way of hiring a sales team IMO. I've been in both categories and although I've only been in the game for a few years, I've learned the pitfalls of the "fresh grad" approach.

The author is right in considering sales "Mission Critical" for startups and other small businesses looking to grow and then goes on to explain the various ways in which an open or ineffective sales position will damage the position of the company. Despite that display of wisdom, they advocate a "fresh grad" approach which is just about the fastest way to ensure high turnover and low productivity. Every salesperson has to start somewhere and a fresh graduate with a sales personality and love for the job often be the best kind of salesperson for this kind of role for the reasons stated by the author. The problem is that candidates can't know if they'll like the world of sales until they've lived in it. Even if they have an amazing ability to filter out applicants without "the right stuff", they'll still end up with a high % of new reps that just don't like the responsibilities of their role.

That can manifest itself in a lack of interest for the industry (boy did I hate copiers, talk about a dead-end market), a lack of interest in the product (some people love sales but hate selling intangibles like services), a mismatch in the selling style required by the market (relationship vs. technical), or a preference for stable income (depends on compensation structure but sales can be very feast or famine).

The company I work for now faced this issue and we've had incredible success stemming from the switch to the strategy of hiring young reps with a few years of experience. We're all "fresh" enough to go after new business with enthusiasm but we were also a known quantity in that we had all proven that we would stick it out in sales. Prior to this switch, we had 50% turnover for all the reasons stated above (some reps wanted to sell tangible products, others wanted a relationship sales style, others wanted a guaranteed salary, and other realized marketing or operations was a better fit for their personality) but none of the "new group" has left in the past 12 months and I doubt anyone will for a while.

The post-2008 stagnation has created climate with a lot of talented reps stuck near the bottom of the ladder. Offer them the next rung or an honest path toward advancement and they'll jump over in a heartbeat. Let the churn n' burn companies (ADP, Cintas, office equipment dealers/manufacturers) do the hard work of weeding out the fresh grads that won't cut it or don't want in. You avoid the biggest risks and although you'll have to pay more, you'll be more confident that you're getting value out of that "Mission Critical" sales position.

cc438··on Announcing the Surface 3
Windows' use of WinSXS and RAM scales with the available capacity. That behavior with WinSXS particularly irks me as it implies acknowledgment that most of those files are unnecessary, yet there's nothing you can do to combat the cancerous tumor that grows in a 128-256gb partition.

I've found 2gb to be perfectly usable with Win7 and 8, Chrome's voracious appetite for memory would be a sticking point, except I've noticed that it does a better job of managing itself when RAM is limited. Chrome runs just fine on 1gb Chromebooks despite having just 768-512mb available most of the time. I will say that the Atom processor is a concern with Chrome even though I know the latest versions are roughly 2-3x more powerful than the Pineview dual core I had in my old Dell netbook. Chrome routinely maxed out the processor on every page load while Firefox and IE never needed more than 25% of the available CPU horsepower. Tripling the available power would eliminate the 5 second lockups I experienced but it could still be a slow, stuttery user experience.

cc438··on Why Does the International Space Station Have That Shape?
There is still some level of aesthetic consideration given to industrial equipment.

Compare the sleekness of the cab and bodywork on a new frontloader with that of an 80's model.

New: http://s7d2.scene7.com/is/image/Caterpillar/C10346217?$cc-g$

Old: https://core-assetnation.netdna-ssl.com/auction_media/57245/...

Most industrial machines have reached a point of utility that there has to be a way to signal "this is the new one" because we are wired to think that "new" means "better".

cc438··on The Almost Muscle Car: Chevy Monza, 1975-1980
I beg to differ: http://allracingcars.com//gallery/chevrolet-monza/budweiser-...
cc438··on Why is clockwise Clockwise? (2008)
I wonder why they didn't decide to name the loops "Inner" and "Outer" like they did for 485 in Charlotte. It makes a lot more sense.

NC has all sorts of crazy road names and designs though. My favorite is 240/26 in Asheville as you'll end up driving West and East simultaneously (26 East is 240 West and 240 East is 26 West).

That and the bridge over the French Broad which is I-240, I-26, Route 74, Route 70, Route 19, Route 23, and Patton Avenue all at the same time across 4 lanes.

cc438··on Tweel – Airless Wheel
They have a terrible NVH (noise, vibration, and harshness) profile. The deformation of the tire in motion produces significantly more noise than a traditional tire due to the larger amount of material and greater stiffness required for the support structure. These high levels of "tire noise" are the main hold up for consumer applications as the tweel has caught on in low-speed applications when durability outweighs cost considerations.
cc438··on Nukes ready to fly
Non-ballistic nuclear missiles still a purpose beyond the intertia of keeping them in service, they're the "stealth strike" option. A cruise missile is designed to hug the terrain, avoiding radar detection through proximity to ground clutter and its small radar profile which can be mistaken for an aircraft.

ICBMs are impossible to intercept once they're past the initial launch stage but they are very easy to detect which kicks off a retaliation. A cruise missile with "modern" stealth design would be an incredibly threatening weapon as you'd only need ~100 or so to cripple the retaliation capability of another nuclear power.

cc438··on The rise of fake engine noise
As neat as that sounds, I wonder what will happen when the amplifier and/or speakers start to give up the ghost in 5-10 years. I associate the word "BMW" with "wiring issues" so I'm skeptical of any system that requires unflinching reliability for the life of the car.

The 2015 Mustang with the turbo 4 cylinder has a similar system but the functionality can't be deactivated or tweaked in any way. Can you imagine the frustration of listening to the acoustic meddling through a blown speaker that you can't disable? I had a Lincoln Mark VIII where the stock amplifier fried itself when I was on the highway. It blasted static with wildly varying pitch at full volume for 5 minutes before I could safely pull over and pull the fuse. It was literally maddening.

cc438··on In South Korea, Rivals Samsung and LG Fight Dirty Over Washing Machines
If they aren't now, they will be soon.

Look at where LG, Hyundai, and Kia were just 15 years ago. LG had to change names from GoldStar to shed the perception of the brand as the king of cheap Sony knock-offs. Hyundai and Kia were releasing unbelievably generic cars with their attempts at "styling" ending up like this: http://en.wikipedia.org/wiki/Kia_Opirus#mediaviewer/File:Kia...

Samsung wasn't much better, they had little presence in the consumer market and weren't regarded any higher than Foxconn is today in terms of electronics/engineering prowess.

I don't see the best Chinese companies being that far off from the best Korea had to offer back then. Look how quickly the Korean companies caught up and then remember how fast everything moves in China.

cc438··on In South Korea, Rivals Samsung and LG Fight Dirty Over Washing Machines
It would surely be original but Bangle's idea of "original" is pretty unique: http://www.autonews.com/apps/pbcsi.dll/storyimage/CA/2011041...

BMW had to put him on a leash after the "cat-eye" 5 Series. Sales fell 2% year over year while Audi A6 and Mercedes E-Class were rocketing upwards.

cc438··on Letter to Amazon Board from Fired Ad Exec
I'm surprised that HR was immediately on the manager's side. I'd expect HR to protect/defend management that is above their work group, they write the checks after all. However, there is no incentive to protect anyone on the same level or below their reporting manager.

HR exists to defend against litigation and conspiring with Kivin's manager worked directly against that purpose. Their actions resulted in a fat public lawsuit where winning won't matter. The findings related to the ethics of Amazon's ad platform are damning, their corporate customers would love to recoup misappropriated advertising dollars with their army of attorneys on retainer.

cc438··on 2015 Tesla Model S P85D First Test
It would definitely shred the drivetrain. The Tesla's Drive Unit is already the weak link in the chain when it comes to hard acceleration, they've been failing left and right after a few thousand miles which caused Tesla to bump their powertrain warranty up to 125,000/Unlimited miles depending on the model (the 65kwh version has the lesser warranty).

The Drive Unit in the Model S was designed by Borg Warner and looks roughly similar to this cutaway of the Roadster's gearset: http://www.sae.org/dlymagazineimages/web/516/7953_8579.png

The issue is in the straight gear-to-gear interface where ~600NM of torque is transferred through a contact area measured in square centimeters. Modern metallurgy can produce some very strong alloys but any flaw means the gear teeth will wear at an incredible rate, leading to the widespread reports of noisy/failed Drive Units. I'd imagine that future designs will use a planetary gearset which spreads the force over more teeth/surface area, that type of gearset would look like this: http://www.rohloff.de/uploads/pics/planeten_start.en.jpg

cc438··on Do Workplace Wellness Programs Work? Usually Not
I've always been told that wellness programs existed to obtain discounts from the insurance providers, akin to "honor roll" discounts with car insurance. As long as you have the bare minimum to qualify, you get a nice chunk of $$$ chopped off your rate.

I get that plenty of rate modifiers have strong links to driving safety like age and marriage status. However, in my limited opinion, there's no way "honor roll" has anything but the weakest link to safe driving as the barrier to achievement varies drastically on a school-to-school basis. Insurance companies are data driven but data (especially healthcare data) lags so long that I wouldn't be surprised if discounts for running a wellness program were founded purely in speculation. This article seems to back that assumption with hard proof as well.

cc438··on Panasonic and Tesla Sign Agreement for the Gigafactory
I think pushing the mainstream launches back would be a wise decision. They've just begun their hard knock education in designing for longevity and reliability with the earliest examples of the Model S passing the 2 year mark.

Traditional auto manufacturers have decades of experience driving the continual refinement of their designs. These efforts have resulted a general expectation among consumers of unfailing reliability and service life measured in decades. The issues they're experiencing with drive units are troubling but acceptable for most owners who know they bought a bleeding-edge testbed for future technology. My concern is one of time, things move relatively slow in the world of automotive engineering and these issues show Tesla has a lot to learn and a lot to change once they've discovered the points of failure. That kind of time doesn't fit with their expected release schedule and owners won't accept the kinds of failure rates experienced in the Model S in a mass market car.

cc438··on The Economy
I wouldn't say spending on entitlement programs are an issue, they're more of a symptom. IMO, the root cause of our economic stagnation is our government's inability to create policy that is efficient, thoughtful, and timely. The inherently conservative features found in the structure western-style democracies are increasingly becoming an anchor on societal progress. Our governments aren't "conservative" in the ideological sense but in the slow, methodical manner in which change is meant to flow through the system.

I keep getting stuck on what I've learned of "lean" manufacturing principles and how hard it was for businesses to adapt to a more responsive and adaptive model of operations. Industrial behemoths could plod along, surviving off the enormous inertia they'd built over the decades. Some fell while others are still plodding along, yet unchallenged by efficient competitors that can't clear the entry barriers of the market, time will still come for them.

Governments are behemoths of a much more impressive scale. Their size lets them wield tools that no business is large enough to hold (monetary policy, "monopoly of violence"). Unfortunately inertia will always be overcome by time and friction in the form of a century of inefficient policy.

The fix isn't going to be found in dropping all forms of welfare or by jacking up tax rates to cover the continuing expenses of such programs, it will be found through guided reform. We need to base policy on facts and economic "facts" aren't universal, they're marginal and we need much more information and real world date to find those margins.

In my opinion the US needs a few big picture changes in order to start making informed policy reforms:

- States need to be given the room for experimentation that was intended our nations founders. The scientific approach to any problem requires a control group and when the federal government attempts to monopolize control at every level there's no room for comparison.

- To that point, there are many problems that can only be approached at a national level. The areas of defense, common natural resources, border controls, and interstate disputes of all types were wisely enshrined in the constitution as the domain of the federal government. While I'd like to hand as much power to the states as possible and others would like to handle things like healthcare at a purely national level, I think the wise approach would involve studying the international picture before jumping to any conclusions. Looking internationally we'd find that universal and mixed systems can be equally successful. Universal national systems (NHS), regional systems (Canada's provincial system), privately weighted mixed systems (Malaysia), and publicly weighted mixed systems (Germany) are all able to produce better outcomes than our attempt at a mixed system. So we must study, experiment and design, maybe we'd find that a provincial system would work best, maybe a national single payer system would work but despite years of debate we've ended up arguing over ideology. Ultimately we must have a system of reasoned debate and a legislative process capable of enacting the well-validated policy.

- Our electoral processes have resulted in a deeply divided, highly ideological country. There's no structural roadblock standing in the way of implementing well-researched policy as I've described, there are only political barriers. I can't think of a quick fix capable of changing millions of minds but I know that any slow shift like this degradation of political discourse can be reversed at the same slow pace. The solution is something that should have always been in the federal domain and that's our disjointed, uncoordinated redistricting processes. Centuries of gerrymandering have resulted in a map of districts engineered entirely for the purpose of furthering a party's political machine. The bent geography necessary for ensuring the "safety" of congressional seats is just a hair above the line of credibility if we are to consider our government "representative". The lack of fair demographic representation boxes us all in to neat little bubbles of ideology where few of us are allowed to express our political will in the face of an overwhelming majority opposition. We're the only country where districts are drawn by the interested parties and this needs to change. I believe it will push people out of their bubbles and hopefully bring about a stronger culture of political debate.

I have a few other ideas that are much less feasible but my tl;dr is that we need to start fostering a less divisive culture that will be receptive to taking a scientific approach to policy. Otherwise the lumbering dinosaurs called western democracies are going to fall so behind the curve that failure will become the only option.

cc438··on A 140-Acre Forest Is About to Materialize in the Middle of Detroit
Probably because it's coming about due to private enterprise I say this not to start a political fight, it's just that it really isn't something that's been attempted on such a scale before (unless I'm ignorant of history). If Detroit is to make a run at revival it will have to do so with a cooperative local government as well. The state's takeover has at least made a dent in the circus that was the Mayor's office over the past few decades which is a good sign. If the city goes back to hilarious levels of incompetence and corruption once the financial situation is solved then it's all for nothing but hopefully a little hope is enough to turn things around and I think it might do the job.
cc438··on Amazon's minimum order size for free shipping is now $35
Maybe I'm the only person who has this issue but Amazon's categorization of items, broken search filters, and poor administration of 3rd party listings makes it very difficult for me to find items that I would regularly want to buy.

I can search for something like "Vacuum Filter" and receive results from 26 departments including Baby Products. So say I go to Home & Outdoor > Vacuums & Floor Care › Vacuum Accessories › Vacuum Filters › Upright Filters. Now I want to search by brand but there's nothing available for my model when I filter the search, however I can buy a Dyson filter under the "Hoover" sorting. Then half the listings are from 3rd parties who only include a lone 120x120 pixel image, an incorrect product description (or none at all), and with 0 product reviews. Then I give up on logical searching, type in the product code and the only listing was in the Automotive department after all.

Sorry to go on a rant but I find the shopping experience on Amazon to be incredibly frustrating. I usually end up using Google or another site and even when I do find the Amazon listing I'm hesitant to buy because of the sketchiness of the listing.

← PreviousPage 2 of 2